电化学催化氧化法降解海洋油田废水COD的工程实施

Electrooxidative degradation of wastewater from onshore gas processing facility

某海洋油田陆地终端站的生产废水含有苯系衍生物及多环芳烃化合物 ,难以用生化法将其COD值降至国家规定的一级排放标准 10 0mg/L以下〔1〕。用电化学催化氧化法处理该废水 ,可以将COD值降解至 10 0mg/L以下。为此 ,建立了一套处理 5 0m3/d生产废水的装置。

Produced wastewater from one onshore gas processing facility contains benzene derivation and multiring aromatic hydrocarbon. It is very difficult to lower its COD value down to national regulatory limitation (Grade 1: less than 100 mg/L) with biochemical method. But with new electrochemical technology, the COD of this wastewater can be reduced to less than 100 mg/L by catalytic oxidation. Based on this technology, a wastewater treatment system with 50 m 3/d processing capacity has been built up.The relevant process parameters and the behaviour of chlorine ions are discussed.